Hello!
I have just started my first ever campaign of Rogue Trader (we just wrapped up session #3) as a Navigator. After having a peruse of the Navigator Powers in the Core book and Into the Storm I can't help but notice that many of them seem potentially interesting if rather situational (Void Watcher, for instance). Some of them also don't appear to get properly "viable" until Adept level. Factoring in that I am only able to take (or upgrade) 1 Navigator Power per rank I can't see myself ever spending my Navigator Power on some of the "softer" or more situational powers. I guess the crux of the matter is that it feels way too expensive, not in terms of exp, but in terms of the limited Power advancements, to go buying something that might never get used or not be super useful.
So with that in mind I was thinking asking our GM to allow me to take 1 additional Navigator Power at every even rank (so 2, 4, 6, 8) for the same (or more?) exp cost, but limiting it so I can only buy Novice Powers and not upgrade existing Powers. And possibly no combat Powers? Any thoughts on whether that is going to be game breaking or or not would be appreciated.